<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    
</head>
<body>
    <div></div>
    <table></table>
    <!-- div*10生成10个div标签 -->
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <!-- ul>li父子关系 -->
    <ul>
        <li></li>
    </ul>
    <!-- div+p兄弟关系 -->
    <div></div>
    <p></p>
    <!-- .nav  -->
    <div class="nav"></div>
    <!-- #banner  -->
    <div id="nanne"></div>
        <!-- p.one  -->
    <p class="one"></p>
    <!-- p#two  -->
    <p id="two"></p>
    <!-- ul>li#three  -->
    <ul>
        <li id="three"></li>
    </ul>
    <!-- .demo$*5  -->
    <div class="demo1"></div>
    <div class="demo2"></div>
    <div class="demo3"></div>
    <div class="demo4"></div>
    <div class="demo5"></div>
    <!-- div{许毓翀大狗蛋}  -->
    <div>许毓翀大狗蛋</div>
    <!-- div{许毓翀大狗蛋}*5 -->
    <div>许毓翀大狗蛋</div>
    <div>许毓翀大狗蛋</div>
    <div>许毓翀大狗蛋</div>
    <div>许毓翀大狗蛋</div>
    <div>许毓翀大狗蛋</div>
    <!-- div{$}*5  -->
    <div>1</div>
    <div>2</div>
    <div>3</div>
    <div>4</div>
    <div>5</div>
</body>
</html>